Inspired by this thread : http://singletrackworld.com/forum/topic/going-from-3x9-to-2x9-whats-involved, (but not wanting to butt in to the conversation about chain tensioners) I'm currently on 44/32/22 with an 11-36 cassette.
Interested by the idea of fitting a 36t middle and bash (previous plan of buying a 2x10 crankset is on hold for budgetry reasons), and a search shows that there are lots of folk who have done this and can use 36-11. But currently if I stay in the middle ring and try to use the 11 at the back the chain rubs on the front mech cage.
Is this because it's set up for a triple? If I go 36 & bash can I just tighten up the cable tension to allow 36-11 to work without rubbing?